Hold in place for welding.

把握在焊接的地方。

If your hole ends up being a bit too big and the knots themselves don't hold the yarn in place, then tug on the yarn ends and stick some Popsicle sticks under the main knot to secure in place.

如果中间的孔太大，线结本身不能将毛线固定在合适的位置，那么可以用力拉毛线的末端，并将一些冰棒棍粘在毛线结下面加以固定。

A pin was put in place to hold my foot to my ankle and screws were inserted in the broken leg.

医生用钉子把我的脚和踝骨固定在了一起，又用螺丝加固了我的断腿。

The pore must produce a strong electric field to hold the DNA in place.

要想固定dna，纳米孔就必须产生很强的电场。

Finish with a hair spray to hold the volume in place.

最后用发胶把头发固定在一个合适的位置。